| Simon Glass | 30a4121 | 2016-05-05 07:28:12 -0600 | [diff] [blame] | 1 | /* |
| 2 | * This header provides macros for at91 dma bindings. |
| 3 | * |
| 4 | * Copyright (C) 2013 Ludovic Desroches <ludovic.desroches@atmel.com> |
| 5 | * |
| 6 | * GPLv2 only |
| 7 | */ |
| 8 | |
| 9 | #ifndef __DT_BINDINGS_AT91_DMA_H__ |
| 10 | #define __DT_BINDINGS_AT91_DMA_H__ |
| 11 | |
| 12 | /* ---------- HDMAC ---------- */ |
| 13 | |
| 14 | /* |
| 15 | * Source and/or destination peripheral ID |
| 16 | */ |
| 17 | #define AT91_DMA_CFG_PER_ID_MASK (0xff) |
| 18 | #define AT91_DMA_CFG_PER_ID(id) (id & AT91_DMA_CFG_PER_ID_MASK) |
| 19 | |
| 20 | /* |
| 21 | * FIFO configuration: it defines when a request is serviced. |
| 22 | */ |
| 23 | #define AT91_DMA_CFG_FIFOCFG_OFFSET (8) |
| 24 | #define AT91_DMA_CFG_FIFOCFG_MASK (0xf << AT91_DMA_CFG_FIFOCFG_OFFSET) |
| 25 | #define AT91_DMA_CFG_FIFOCFG_HALF (0x0 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* half FIFO (default behavior) */ |
| 26 | #define AT91_DMA_CFG_FIFOCFG_ALAP (0x1 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* largest defined AHB burst */ |
| 27 | #define AT91_DMA_CFG_FIFOCFG_ASAP (0x2 << AT91_DMA_CFG_FIFOCFG_OFFSET) /* single AHB access */ |
| 28 | |
| 29 | |
| 30 | /* ---------- XDMAC ---------- */ |
| 31 | #define AT91_XDMAC_DT_MEM_IF_MASK (0x1) |
| 32 | #define AT91_XDMAC_DT_MEM_IF_OFFSET (13) |
| 33 | #define AT91_XDMAC_DT_MEM_IF(mem_if) (((mem_if) & AT91_XDMAC_DT_MEM_IF_MASK) \ |
| 34 | << AT91_XDMAC_DT_MEM_IF_OFFSET) |
| 35 | #define AT91_XDMAC_DT_GET_MEM_IF(cfg) (((cfg) >> AT91_XDMAC_DT_MEM_IF_OFFSET) \ |
| 36 | & AT91_XDMAC_DT_MEM_IF_MASK) |
| 37 | |
| 38 | #define AT91_XDMAC_DT_PER_IF_MASK (0x1) |
| 39 | #define AT91_XDMAC_DT_PER_IF_OFFSET (14) |
| 40 | #define AT91_XDMAC_DT_PER_IF(per_if) (((per_if) & AT91_XDMAC_DT_PER_IF_MASK) \ |
| 41 | << AT91_XDMAC_DT_PER_IF_OFFSET) |
| 42 | #define AT91_XDMAC_DT_GET_PER_IF(cfg) (((cfg) >> AT91_XDMAC_DT_PER_IF_OFFSET) \ |
| 43 | & AT91_XDMAC_DT_PER_IF_MASK) |
| 44 | |
| 45 | #define AT91_XDMAC_DT_PERID_MASK (0x7f) |
| 46 | #define AT91_XDMAC_DT_PERID_OFFSET (24) |
| 47 | #define AT91_XDMAC_DT_PERID(perid) (((perid) & AT91_XDMAC_DT_PERID_MASK) \ |
| 48 | << AT91_XDMAC_DT_PERID_OFFSET) |
| 49 | #define AT91_XDMAC_DT_GET_PERID(cfg) (((cfg) >> AT91_XDMAC_DT_PERID_OFFSET) \ |
| 50 | & AT91_XDMAC_DT_PERID_MASK) |
| 51 | |
| 52 | #endif /* __DT_BINDINGS_AT91_DMA_H__ */ |